agent: A factor, such as a microorganism, chemical substance, or form of radiation, whose presence, excessive presence, or (in deficiency diseases) relative absence is essential for the occurrence of a disease. age-specific mortality rate: A mortality rate limited to a particular age group. The numerator is the number of deaths in that age group; the denominator is the number of persons in that age group in the population.
Sleeping Pills and Memory Loss. Elderly people have more trouble sleeping than younger folks. Some causes include waking to urinate, pain due to arthritis or other inflammations and lack of exercise. Sleeping pills can help, but they have a dark side. They can cause memory loss.
Memory Loss Cause #6 â Insomnia Too little sleep is not healthy for the body in myriad wys, especially when it relates to brain functioning and memory. Insomnia or lack of sleep can cause problems with concentration or focusing on details or tasks, resulting in forgetfulness and confusion.